Web services returns incorrect JSON for deep queue tree
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Key: MAPREDUCE-4020
URL: https://issues.apache.org/jira/browse/MAPREDUCE-4020
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mrv2, webapps
Affects Versions: 0.23.1
Reporter: Jason Lowe
When the capacity scheduler is configured for more than two levels of queues,
the web services API returns incorrect JSON for the subQueues field of some
parent queues. The "subQueues" field for parent queues should always be an
array, but sometimes the field appears multiple times for a queue and as what
looks like a CapacityQueueInfo object instead of an array. Besides the
sometimes-an-array-sometimes-not problem, parsing the result into a JSON object
causes all but the last "subQueues" field to be discarded since they are
overwritten by subsequent fields with the same name.
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